Step 7: Mark and cut

man marking and cutting replacement clapboard for exterior house siding
Photo: Webb Chappell
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Place a full-length piece of the damaged siding on the face of the replacement. Line up the ends, and, using the old piece as a guide, mark the new clapboard with a utility knife. Score the cut line with the utility knife, guided by a square. (Scoring prevents the wood from chipping when you cut it.) With a handsaw, cut the new piece of siding on the waste side of the line. Angle the blade slightly to cut a bevel toward the side that will be against the house. This leaves a little extra space for caulk.
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    Tools List

    • utility knife
      Utility knife
    • flat prybar
      Pry bar
    • hammer
      Hammer
    • hacksaw blade
      Hacksaw blade
    • hand saw
      Handsaw
    • caulk gun
      Caulk gun

    Shopping List

    1. Replacement Clapboard (see Overview)

    2. Acrylic Latex Caulk

    3. 7d Stainless Steel Ring-Shank Siding Nails